Java Utililty Methods Hex Calculate

List of utility methods to do Hex Calculate

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Description

The list of methods to do Hex Calculate are organized into topic(s).

Method

StringtoHexString(final byte b)
Converts a byte into its hexadecimal representation, padding with a leading zero to get an even number of characters. 
String hexString = Integer.toHexString(b & 0xFF);
if (hexString.length() % 2 != 0) {
    hexString = "0" + hexString;
return hexString;
StringtoHexString(final byte b)
to Hex String 
return toHexString(toByteArray(b));
StringtoHexString(final byte hex)
to Hex String 
return "0x" + Integer.toHexString(hex & 0x000000FF);
StringtoHexString(final byte value)
Returns a unsigned hex String of the byte value. 
String result = Integer.toHexString(toUnsigned(value)).toUpperCase();
if (result.length() == 1) {
    result = "0x0" + result;
} else {
    result = "0x" + result;
return result;
StringtoHexString(final byte[] arr)
to Hex String 
final StringBuilder buffer = new StringBuilder();
buffer.append('[');
if (arr.length > 0)
    buffer.append(Integer.toHexString(arr[0]));
for (int i = 1; i < arr.length; i++) {
    buffer.append(' ');
    buffer.append(Integer.toHexString(arr[i]));
buffer.append(']');
return buffer.toString();
StringtoHexString(final byte[] array)
to Hex String 
return toStringHex(array, 0, array.length);
StringtoHexString(final byte[] b)
Converts a byte array to a hex string representing it. 
final StringBuilder sb = new StringBuilder();
for (final byte element : b) {
    sb.append(hexChar[(element & 0xf0) >>> 4]);
    sb.append(hexChar[element & 0x0f]);
return sb.toString();
StringtoHexString(final byte[] bs)
to Hex String 
final int len;
if (bs != null && (len = bs.length) != 0) {
    final char[] cs = new char[len << 1];
    final char[] myDigits = DIGITS;
    byte b;
    for (int i = 0, j = 0; i < len; i++) {
        cs[j++] = myDigits[((b = bs[i]) >>> 4) & 0xF];
        cs[j++] = myDigits[b & 0xF];
...
StringtoHexString(final byte[] bs, final char[] myDigits)
to Hex String 
final int len;
if (bs == null || (len = bs.length) == 0) {
    return null;
final char[] cs = new char[len << 1];
byte b;
for (int i = 0, j = 0; i < len; i++) {
    cs[j++] = myDigits[((b = bs[i]) >>> 4) & 0xF];
...
StringtoHexString(final byte[] buffer)
Converts an array of bytes into an hex string. 
final char[] charBuffer = new char[buffer.length * 2];
for (int i = 0; i < buffer.length; ++i) {
    charBuffer[i * 2] = HEX_DIGITS[(buffer[i] >> BITS_SIZE_OF_NIBBLE) & INT_BYTE_LOW_NIBBLE_MASK];
    charBuffer[i * 2 + 1] = HEX_DIGITS[buffer[i] & INT_BYTE_LOW_NIBBLE_MASK];
return new String(charBuffer);